CN108746987B - Friction stir welding device for circular seam welding - Google Patents
Friction stir welding device for circular seam welding Download PDFInfo
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- CN108746987B CN108746987B CN201810631667.XA CN201810631667A CN108746987B CN 108746987 B CN108746987 B CN 108746987B CN 201810631667 A CN201810631667 A CN 201810631667A CN 108746987 B CN108746987 B CN 108746987B
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
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Abstract
The invention relates to the technical field of friction stir welding, and discloses a friction stir welding device for girth welding, which comprises a welding base, first frame and second frame are installed respectively to the left end and the right-hand member of welding base top side surface, the third frame is installed on the top of first frame and second frame, install first cylinder and second cylinder in first frame and the second frame respectively, install first fastening device and second fastening device on first cylinder and the second cylinder respectively, install the third cylinder in the third frame, the third cylinder is connected with first motor through first bearing board, first motor passes through the bearing bracket and is connected with the extension arm, the extension arm passes through the second bearing board and is connected with the second motor, the axle terminal surface fixed mounting of the second output shaft of second motor is at the top end face center of stirring head, threaded connection is passed through with the top of stirring needle in the bottom of stirring head. The invention solves the problem that the existing friction stir welding device can not weld the circular seam.
Description
Technical Field
The invention relates to the technical field of friction stir welding, in particular to a friction stir welding device for girth welding.
Background
Patent document with application publication number CN107931825A discloses a friction stir welding splicing tool for large ellipsoidal workpieces, which comprises a fixed base, a lifting mold, an adjusting mechanism, a mechanical pressing bar and a lifting mechanism, wherein the workpieces are attached to the lifting mold, the position of the mechanical pressing strip on the lifting die tire is adjusted through an adjusting mechanism fixed on the lifting die tire, two ends of the mechanical pressing strip are fixed on the lifting die tire, the lifting mechanism comprises a lifting mechanism consisting of a limit stop, a hydraulic cylinder, a guide shaft and a hydraulic cylinder base, a plurality of guide shafts are fixed on the hydraulic cylinder base through threaded connection, the hydraulic cylinder is fixed at the middle position of the hydraulic cylinder base through threads, the limit stop is installed on the hydraulic cylinder base, a plurality of guide holes and a threaded hole are formed in the bottom of the lifting die tire and connected with the guide shaft and a push rod of the hydraulic cylinder respectively, the adjusting mechanism consists of an adjusting seat and an adjusting screw, and fine adjustment of.
The invention improves the production efficiency of friction stir welding of large ellipsoidal workpieces and realizes in-situ edge milling and welding.
However, the friction stir welding device has a technical problem that the circumferential weld cannot be welded, and has technical problems that the circumferential weld cannot be efficiently welded, the annular workpiece to be welded cannot be effectively fixed, the fastening performance of the fastening mechanism cannot be effectively improved, surface rust of the workpiece to be welded cannot be efficiently removed, the workpiece to be welded cannot be effectively pressed, and the rotation of the workpiece to be welded cannot be effectively prevented.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a friction stir welding device for girth welding, which has the advantages of efficiently welding a girth, effectively fixing an annular workpiece to be welded, effectively improving the fastening performance of a fastening mechanism, efficiently removing rust on the surface of the workpiece to be welded, effectively pressing the workpiece to be welded, effectively preventing the workpiece to be welded from rotating and the like, and solves the technical problem that the existing friction stir welding device cannot weld the girth.
(II) technical scheme
In order to achieve the purposes of efficiently welding a circular seam, effectively fixing an annular workpiece to be welded, effectively improving the fastening performance of a fastening mechanism, efficiently removing rust on the surface of the workpiece to be welded, effectively pressing the workpiece to be welded and effectively preventing the workpiece to be welded from rotating, the invention provides the following technical scheme:
a friction stir welding device for girth welding comprises a welding base, wherein a first rack and a second rack which are arranged in a rectangular shape in cross section and are symmetrical to each other are respectively installed at the left end center and the right end center of the top side surface of the welding base, the rectangular surface of the bottom end of the first rack and the rectangular surface of the bottom end of the second rack are respectively fixedly connected with the left end center and the right end center of the top side surface of the welding base, a third rack which is arranged in a rectangular shape and is positioned right above the welding base is installed at the top ends of the first rack and the second rack, and the left end and the right end of the bottom side surface of the third rack are respectively fixedly connected with the rectangular surface of the top end of the first rack and the rectangular surface of the top end of the;
a first cylinder and a second cylinder which are symmetrical to each other are respectively arranged right above the center of the bottom end of the right side face of the first rack and right above the center of the bottom end of the left side face of the second rack, a first fastening mechanism and a second fastening mechanism which are arranged in a U-shaped cross section and are symmetrical to each other are respectively arranged on a first piston rod of the first cylinder and a second piston rod of the second cylinder, the first fastening mechanism and the second fastening mechanism are respectively composed of a top sector plate, a connecting plate and a bottom sector plate which are integrally formed and sequentially connected with each other, and the cross section of the connecting plate of the first fastening mechanism and the cross section of the connecting plate of the second fastening mechanism are respectively and fixedly connected with the free end face of the first piston rod of the first cylinder and the free end face of the second piston rod of the second cylinder;
the inner side surfaces of the bottom sector plate and the connecting plate of the first fastening mechanism are in friction connection with the edge center of the bottom side surface of a second workpiece to be welded and the center of the left circular arc-shaped convex surface, which are arranged in a semicircular shape, and the inner side surfaces of the bottom sector plate and the connecting plate of the second fastening mechanism are in friction connection with the edge center of the bottom side surface of a third workpiece to be welded and the center of the right circular arc-shaped convex surface, which are arranged in a semicircular shape;
the circular arc concave surface on the right side of the second workpiece to be welded and the circular arc concave surface on the left side of the third workpiece to be welded are respectively in mutual friction connection with the circular arc convex surface on the left side and the circular arc convex surface on the right side of the first workpiece to be welded which are arranged in a circular ring shape and are positioned outside the center of the top side surface of the support, the circular ring surface on the bottom side of the first workpiece to be welded is fixedly connected with the center of the top side surface of the support and the outside of the center of the top side surface of the support, the bottom side surface of the first workpiece to be welded is fixedly connected with the center of the bottom side surface of the support, the inside wall of the first workpiece to be welded is in friction connection with the outside wall between the axial center and the bottom end of the support, a pressing mechanism consisting of a pressing rod, a pressing seat and a pressing ring body which are sequentially connected is arranged on the inside edge of, the inner side edge of the annular surface on the top side of the compression ring body is fixedly connected with the annular surface at the bottom end of a compression seat, the bottom end of the compression seat is provided with an opening, the interior of the annular surface is arranged in a cavity, the center of the surface of the top side of the compression seat is fixedly connected with the bottom end surface of a compression rod arranged in a cylindrical shape, and the top end surface of the compression rod is fixedly connected with the bottom end surface of a bearing seat arranged in a rectangular shape;
the center of the top end surface of the bearing seat is fixedly connected with the end surface of a first output shaft of a first motor, the center of the non-output end surface of the bearing seat is fixedly connected with the center of the bottom surface of the first bearing plate, and the center of the top surface of the first bearing plate is fixedly connected with the free end surface of a third piston rod of a third cylinder, which is fixedly arranged at the center of the bottom surface of a third frame;
the center of one side surface of the bearing seat is fixedly connected with an end cover of a fourth cylinder, the free end surface of a fourth piston rod of the fourth cylinder is fixedly connected with the center of the free end surface of a horizontal arm of an extension arm consisting of an integrally formed and interconnected horizontal arm and a vertical arm, the free end surface of the vertical arm of the extension arm is fixedly connected with the center of the bottom side surface and the center of the top side surface of a second bearing plate fixedly connected with the center of the non-output end surface of a second motor, the shaft end surface of a second output shaft of the second motor is fixedly arranged at the center of the top end surface of a stirring head in a truncated cone shape, the height of the horizontal plane where the shaft shoulder of the stirring head with the diameter of the top end section larger than the diameter of the bottom end section is equal to the height of the horizontal plane where the bottom end of the pressing mechanism is located, the center of the shaft shoulder of the bottom end of the stirring head cone is provided with a through hole with a, the conical bottom surface of the conical body of the stirring needle is fixedly connected with the bottom end surface of the cylinder with the threads on the outer side wall of the conical body of the stirring needle, and the outer side wall of the cylinder of the stirring needle is connected with the inner side wall of the shaft shoulder center through hole at the bottom end of the stirring head through the threads.
Preferably, an anti-slip sleeve with a circular ring-shaped section and anti-slip layers on the inner side wall and the outer side wall is sleeved between the axial center and the bottom end of the outer side wall of the fulcrum shaft, the inner side wall of the anti-slip sleeve is in friction connection with the outer side wall between the axial center and the bottom end of the fulcrum shaft, and the circular ring surface at the bottom end of the anti-slip sleeve is in friction connection with the outer side edge of the center of the top surface of the.
Preferably, a first fastening pad with a U-shaped section is mounted on the inner side surface of the first fastening mechanism, the first fastening pad is composed of a first sector plate, a connecting plate and a second sector plate, the first sector plate, the connecting plate and the second sector plate are integrally formed and sequentially connected with one another, the section of the connecting plate is in a sector shape, and the outer side surface of the first fastening pad is fixedly connected with the inner side surface of the first fastening mechanism;
the inner side face of the second fastening mechanism is provided with a second fastening pad, the section of the second fastening pad is arranged in a U-shaped shape, the second fastening pad is composed of a first fan-shaped plate, a connecting plate and a second fan-shaped plate, the first fan-shaped plate, the connecting plate and the second fan-shaped plate are integrally formed and sequentially connected, the section of the connecting plate is arranged in a fan-shaped shape, and the outer side face of the second fastening pad is fixedly connected with the inner side face of the second fastening mechanism.
Preferably, the shaft shoulder of the stirring head is uniformly provided with a derusting plate which is provided with a sector surface in a sector shape in cross section and the top side of the derusting plate is fixedly connected with the shaft shoulder of the stirring head, the radial center of the sector surface at the bottom side of the derusting plate rotating anticlockwise is provided with a derusting knife which is provided with a triangular shape in cross section and the bottom knife edge and the horizontal surface of the derusting knife are arranged in parallel, and the rectangular surface at the top end of the derusting knife is fixedly connected with the radial center of the sector surface at the bottom side of the derusting plate.
Preferably, the rust removing conical teeth which are arranged in a conical shape and are linearly arranged on the radius of the shaft shoulder of the stirring head are uniformly distributed on the right side of the radial center of the sector surface on the bottom side of the rust removing plate, and the conical bottom surfaces of the rust removing conical teeth are fixedly connected with the right side of the radial center of the sector surface on the bottom side of the rust removing plate.
Preferably, the rust removing brushes which are made of plastic materials and are linearly arranged on the radius of the shaft shoulder of the stirring head are uniformly distributed on the left side of the radial center of the sector surface on the bottom side of the rust removing plate, and the top ends of the rust removing brushes which are arranged in a bundle shape are fixedly connected with the left side of the radial center of the sector surface on the bottom side of the rust removing plate.
Preferably, the inner side of the outer edge of the bottom side circular ring of the pressing ring body of the pressing mechanism is provided with a sliding ring body, the section of the sliding ring body is arranged in a circular ring shape, the circular ring of the bottom side of the sliding ring body is provided with a sliding guide layer, and the circular ring of the top side of the sliding ring body is fixedly connected with the inner side of the outer edge of the bottom side circular ring of the pressing ring body.
(III) advantageous effects
Compared with the prior art, the invention provides a friction stir welding device for girth welding, which has the following beneficial effects:
1. the stirring friction device is fixedly connected with the shaft end face of a first output shaft of a first motor fixedly connected with a non-output end face and the bottom side surface center of a first bearing plate through the top end face center of the bearing seat, the top side surface center of the first bearing plate is fixedly connected with the free end face of a third piston rod of a third cylinder fixedly arranged at the bottom side surface center of a third frame, one side face center of the bearing seat is fixedly connected with an end cover of a fourth cylinder, the free end face of a fourth piston rod of the fourth cylinder is fixedly connected with the free end face center of a horizontal arm of an extension arm consisting of an integrally formed and mutually connected horizontal arm and vertical arm, the free end face of the vertical arm of the extension arm is fixedly connected with the bottom side surface center and the top side surface center of a second bearing plate fixedly connected with the non-output end face of a second motor, the shaft end face of a second output shaft of the second motor is fixedly arranged at the top end face center of a stirring head in a circular truncated cone shape, a stirring pin of a stirring head is inserted from the top sides of the superposed surfaces of a first workpiece to be welded and a third workpiece to be welded, a second output shaft of a second motor drives the stirring head and the stirring pin to rotate at a high speed, a shaft shoulder of the stirring head, the right end of the top surface of the first workpiece to be welded and the left end of the top surface of the third workpiece to be welded generate heat through friction, the stirring pin extends into the right end surface of the first workpiece to be welded and the left end surface of the third workpiece to be welded to perform friction and stirring, so that the temperature of a material between the right end surface of the first workpiece to be welded and the left end surface of the third workpiece to be welded is raised and softened, a first output shaft of a first motor drives a bearing seat to rotate, the stirring head and the stirring pin are driven to move to the superposed surfaces of the first workpiece to be welded and the third workpiece to be welded to the superposed surfaces of the first workpiece to be welded and the second workpiece to be welded together, and the material in front, the high-plastic-deformation material is gradually deposited right behind the stirring head and the stirring needle, the first fastening mechanism fastens the first workpiece to be welded and the second workpiece to be welded under the pushing action of the first cylinder, the circular arc-shaped concave surface on the right side of the second workpiece to be welded and the circular arc-shaped convex surface on the left side of the first workpiece to be welded form an annular stirring friction welding seam, the second fastening mechanism fastens the first workpiece to be welded and the third workpiece to be welded under the pushing action of the second cylinder, and the circular arc-shaped concave surface on the left side of the third workpiece to be welded and the circular arc-shaped convex surface on the right side of the first workpiece to be welded form an annular stirring friction welding seam.
2. This friction stir device has set the anti-skidding cover that the cross-section is the setting of ring shape and inside wall and lateral wall all have the skid resistant course through overlapping between the axial direction of fulcrum lateral wall and bottom, the inside wall of anti-skidding cover and the lateral wall friction connection between fulcrum axial direction and the bottom, the torus of anti-skidding cover bottom and the outside edge friction connection of support top side surface center, the anti-skidding cover can prevent effectively that first waiting to weld the work piece and take place radial displacement at the support, the technological effect of waiting to weld the work piece of effective stationary ring shape has been realized.
3. This friction stir device, through install the first fastening pad that the cross-section is the setting of U type shape on first fastening device's medial surface, the lateral surface of first fastening pad and first fastening device's medial surface fixed connection, install the second fastening pad that the cross-section is the setting of U type shape on second fastening device's the medial surface, the lateral surface of second fastening pad and second fastening device's medial surface fixed connection, first fastening pad and second fastening pad can improve effectively and treat the frictional resistance between welding workpiece and the fastening device, the technological effect of fastening device's fastening performance has effectively been realized improving.
4. The friction stir device comprises a rust removing plate which is uniformly distributed on a shaft shoulder of a stirring head, the cross section of the rust removing plate is arranged in a fan shape, a fan-shaped surface at the top side of the rust removing plate is fixedly connected with the shaft shoulder of the stirring head, a rust removing knife which is arranged in a triangle shape, the cross section of the rust removing knife is arranged in a horizontal plane, the bottom end knife edge of the rust removing knife is parallel to the horizontal plane, rust removing conical teeth which are arranged in a cone shape and are linearly arranged on the radius of the shaft shoulder of the stirring head are uniformly distributed on the right side of the radial center of the fan-shaped surface at the bottom side of the rust removing plate, rust removing brushes which are made of plastic materials and are linearly arranged on the radius of the shaft shoulder of the stirring head are uniformly distributed on the left side of the radial center of the fan-shaped surface at the bottom side of the rust removing plate, and the conical teeth on the rust removing plate firstly remove rust on the top surface of, the rust removing knife then scrapes the rust on the top surface of the workpiece to be welded, and the rust removing brush brushes the residual rust on the top surface of the workpiece to be welded, so that the technical effect of efficiently removing the rust on the surface of the workpiece to be welded is achieved.
5. The friction stir device comprises a pressing ring body, wherein the pressing ring body is provided with a pressing ring body, the pressing ring body is provided with a circular ring, the outer side edge of the circular ring is provided with a sliding ring body, the cross section of the sliding ring body is arranged in a circular ring shape, the circular ring is fixedly connected with the inner side of the outer side edge of the circular ring at the bottom side of the pressing ring body, the sliding ring body can effectively reduce the friction resistance between the pressing mechanism and a first workpiece to be welded while pressing the first workpiece to be welded, the problem that the first workpiece to be welded rotates along with the pressing mechanism is effectively avoided, and the technical effects of effectively pressing the workpiece to be welded and effectively preventing the workpiece to be welded from rotating.
Drawings
FIG. 1 is a front view of a friction stir welding apparatus for girth welding according to the present invention;
FIG. 2 is a top view of the welding base, first frame and second frame of the present invention;
FIG. 3 is a cross-sectional view of the welding base, first frame and second frame of the present invention;
FIG. 4 is a cross-sectional view of the hold-down mechanism of the present invention;
FIG. 5 is a schematic structural view of a stirring head and a stirring pin according to the present invention;
FIG. 6 is a bottom view of the stirring head of the present invention;
FIG. 7 is a schematic structural view of a rust removing plate of the present invention;
fig. 8 is a schematic structural diagram of the pressing mechanism of the present invention.
The following are marked in the figure: 1-welding a base, 101-a support, 102-a fulcrum shaft and 103-an anti-slip sleeve;
2-a first frame, 201-a first cylinder, 202-a first piston rod, 203-a first fastening mechanism, 204-a first fastening pad;
3-a second frame, 301-a second cylinder, 302-a second piston rod, 303-a second fastening mechanism, 304-a second fastening pad;
4-a third frame, 401-a third cylinder, 402-a third piston rod, 403-a first bearing plate, 404-a first motor, 405-a first output shaft, 406-a bearing seat, 407-a fourth cylinder, 408-a fourth piston rod, 409-an extension arm, 410-a second bearing plate, 411-a second motor, 412-a second output shaft;
5-stirring head, 501-derusting plate, 502-derusting knife, 503-derusting bevel gear and 504-derusting brush;
6-a stirring pin;
7-a pressing mechanism, 701-a pressing rod, 702-a pressing seat, 703-a pressing ring body and 704-a sliding ring body;
8-a first workpiece to be welded, 9-a second workpiece to be welded, and 10-a third workpiece to be welded.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A friction stir welding device for girth welding is disclosed, and referring to fig. 1 and 2, the friction stir welding device comprises a welding base 1, wherein a first rack 2 and a second rack 3 which are arranged in a rectangular shape in cross section and are symmetrical to each other are respectively installed at the left end center and the right end center of the top surface of the welding base 1, the rectangular surface at the bottom end of the first rack 2 and the rectangular surface at the bottom end of the second rack 3 are respectively and fixedly connected with the left end center and the right end center of the top surface of the welding base 1, a third rack 4 which is arranged in a rectangular shape and is positioned right above the welding base 1 is installed at the top ends of the first rack 2 and the second rack 3, and the left end and the right end of the bottom surface of the third rack 4 are respectively and fixedly connected with the rectangular surface at the top end of the first rack 2 and;
a first air cylinder 201 and a second air cylinder 301 which are symmetrical to each other are respectively arranged right above the bottom end center of the right side surface of the first frame 2 and right above the bottom end center of the left side surface of the second frame 3, a first fastening mechanism 203 and a second fastening mechanism 303 which are arranged in a U-shaped cross section and are symmetrical to each other are respectively arranged on a first piston rod 202 of the first air cylinder 201 and a second piston rod 302 of the second air cylinder 301, the first fastening mechanism 203 and the second fastening mechanism 303 are respectively composed of a top sector plate, a connecting plate and a bottom sector plate which are integrally formed and sequentially connected with each other, and the cross section of the connecting plate of the first fastening mechanism 203 and the cross section of the connecting plate of the second fastening mechanism 303 are respectively and fixedly connected with the free end surface of the first piston rod 202 of the first air cylinder 201 and the free end surface of the second piston rod 302 of the second air cylinder 301;
the inner side surfaces of the bottom sector plate and the connecting plate of the first fastening mechanism 203 are in friction connection with the edge center of the bottom side surface of the second workpiece to be welded 9 arranged in a semicircular shape and the center of the left circular arc convex surface, and the inner side surfaces of the bottom sector plate and the connecting plate of the second fastening mechanism 303 are in friction connection with the edge center of the bottom side surface of the third workpiece to be welded 10 arranged in a semicircular shape and the center of the right circular arc convex surface;
the circular arc concave surface on the right side of the second workpiece to be welded 9 and the circular arc concave surface on the left side of the third workpiece to be welded 10 are respectively in mutual friction connection with the circular arc convex surface on the left side and the circular arc convex surface on the right side of the first workpiece to be welded 8 which are arranged in a circular ring shape and are positioned outside the center of the top side surface of the support 101, as shown in fig. 4, the circular ring surface on the bottom side of the first workpiece to be welded 8 is in fixed connection with the center of the top side surface of the support 101 and is in friction connection with the outside of the center of the top side surface of the support 101, the bottom side surface of the first workpiece to be welded 8 is in fixed connection with the center of the top side surface of the support 102, the inner side wall of the first workpiece to be welded 8 is in friction connection with the outer side wall between the axial center and the bottom end of the support 102, a pressing mechanism 7 formed by sequentially connecting a pressing rod 701 The inner side edges of the surfaces are in mutual rotating friction connection, the inner side edge of the circular ring surface at the top side of the pressing ring body 703 is fixedly connected with the circular ring surface at the bottom end of a pressing seat 702 with an opening and a cavity inside, the center of the top side surface of the pressing seat 702 is fixedly connected with the bottom end surface of a pressing rod 701 arranged in a cylindrical shape, and the top end surface of the pressing rod 701 is fixedly connected with the bottom end surface of a bearing seat 406 arranged in a rectangular shape;
the center of the top end surface of the bearing block 406 is fixedly connected with the end surface of the shaft of the first output shaft 405 of the first motor 404 fixedly connected with the non-output end surface and the center of the bottom surface of the first bearing plate 403, and the center of the top surface of the first bearing plate 403 is fixedly connected with the free end surface of the third piston rod 402 of the third cylinder 401 fixedly arranged at the center of the bottom surface of the third frame 4;
the center of one side surface of the bearing seat 406 is fixedly connected with the end cover of the fourth cylinder 407, the free end surface of the fourth piston rod 408 of the fourth cylinder 407 is fixedly connected with the center of the free end surface of the horizontal arm of the extension arm 409 composed of the horizontal arm and the vertical arm which are integrally formed and connected with each other, the free end surface of the vertical arm of the extension arm 409 is fixedly connected with the center of the bottom surface and the center of the top surface of the second bearing plate 410 which is fixedly connected with the non-output end surface of the second motor 411, the shaft end surface of the second output shaft 412 of the second motor 411 is fixedly installed at the center of the top end surface of the stirring head 5 which is arranged in a circular truncated cone shape, the horizontal plane height of the shaft shoulder of the stirring head 5 with the diameter of the top end section larger than the diameter of the bottom end section is equal to the horizontal plane height of the bottom end of the pressing mechanism 7, as shown in fig. 5, the center of, install the stirring pin 6 of constituteing by integrated into one piece and interconnect's cylinder and cone in this through-hole, the awl bottom surface of the cone of stirring pin 6 and the bottom face fixed connection of the cylinder that takes the screw thread on its lateral wall, the lateral wall of the cylinder of stirring pin 6 passes through screw thread interconnect with the inside wall of the shaft shoulder center through-hole of stirring head 5 bottom.
Preferably, as shown in fig. 3, an anti-slip sleeve 103 with a circular cross section and an anti-slip layer is sleeved between the axial center and the bottom end of the outer side wall of the fulcrum shaft 102, the inner side wall of the anti-slip sleeve 103 is frictionally connected with the outer side wall between the axial center and the bottom end of the fulcrum shaft 102, and the circular ring surface of the bottom end of the anti-slip sleeve 103 is frictionally connected with the outer side edge of the center of the top surface of the support 101.
Preferably, a first fastening pad 204 with a U-shaped cross section is mounted on the inner side surface of the first fastening mechanism 203, the first fastening pad 204 is composed of a first sector plate, a connecting plate with a sector section and a second sector plate, which are integrally formed and sequentially connected with each other, and the outer side surface of the first fastening pad 204 is fixedly connected with the inner side surface of the first fastening mechanism 203;
the inner side surface of the second fastening mechanism 303 is provided with a second fastening pad 304 with a U-shaped cross section, the second fastening pad 304 is composed of a first sector plate, a connecting plate and a second sector plate, the first sector plate, the connecting plate and the second sector plate are integrally formed and sequentially connected, the cross section of the connecting plate is arranged in a sector shape, and the outer side surface of the second fastening pad 304 is fixedly connected with the inner side surface of the second fastening mechanism 303.
Preferably, as shown in fig. 6 and 7, the shaft shoulder of the stirring head 5 is uniformly distributed with a derusting plate 501 which is provided with a sector-shaped section and the top sector of which is fixedly connected with the shaft shoulder of the stirring head 5, the radial center of the bottom sector of the derusting plate 501 rotating counterclockwise is provided with a derusting knife 502 which is provided with a triangular section and the bottom knife edge of which is parallel to the horizontal plane, and the rectangular surface of the top end of the derusting knife 502 is fixedly connected with the radial center of the bottom sector of the derusting plate 501.
Preferably, the right side of the radial center of the sector surface at the bottom side of the derusting plate 501 is uniformly provided with derusting bevel teeth 503 which are arranged in a cone shape and are linearly arranged on the radius of the shaft shoulder of the stirring head 5, and the bottom surfaces of the derusting bevel teeth 503 are fixedly connected with the right side of the radial center of the sector surface at the bottom side of the derusting plate 501.
Preferably, the rust removing brushes 504 which are made of plastic materials and are linearly arranged on the radius of the shaft shoulder of the stirring head 5 are uniformly distributed on the left side of the radial center of the sector surface at the bottom side of the rust removing plate 501, and the top ends of the rust removing brushes 504 which are arranged in a bundle shape are fixedly connected with the left side of the radial center of the sector surface at the bottom side of the rust removing plate 501.
Preferably, as shown in fig. 8, a sliding ring body 704, which has a circular ring-shaped cross section and a sliding layer on the bottom-side circular ring surface, is installed on the inner side of the outer edge of the bottom-side circular ring surface of the pressing ring body 703 of the pressing mechanism 7, and the circular ring surface on the top side of the sliding ring body 704 is fixedly connected with the inner side of the outer edge of the bottom-side circular ring surface of the pressing ring body 703.
During operation, a first workpiece to be welded 8 is sleeved on a fulcrum shaft 102 of a support 101 of a welding base 1, the left end of a second workpiece to be welded 9 and the right end of a third workpiece to be welded 10 are respectively inserted into a first fastening mechanism 203 and a second fastening mechanism 303, the right end of the second workpiece to be welded 9 and the left end of the third workpiece to be welded 10 are respectively placed on the left side edge and the right side edge of the top side surface of the support 101, a first piston rod 202 of a first air cylinder 201 pushes the first fastening mechanism 203 to enable a circular arc concave surface on the right side of the second workpiece to be welded 9 and a circular arc convex surface on the left side of the first workpiece to be welded 8 to coincide with each other, and a second piston rod 302 of a second air cylinder 301 pushes the second fastening mechanism 303 to enable a circular arc concave surface on the left side of the third workpiece to be welded 10 and a circular arc convex surface on the;
a third piston rod 402 of the third cylinder 401 pushes the first supporting plate 403 to move towards the right lower side, so that the bottom surface of a sliding ring body 704 of the pressing mechanism 7 and the top side surface of the first workpiece to be welded 8 are in mutual frictional contact, a fourth piston rod 408 of the fourth cylinder 407 pushes an extension arm 409 to the left end to move a shaft shoulder of the stirring head 5 to the right above the superposed surface of the first workpiece to be welded 8 and the third workpiece to be welded 10 and to be in mutual frictional contact with the right end edge of the top side surface of the first workpiece to be welded 8 and the left end edge of the top side surface of the second workpiece to be welded 10, the stirring needle 6 is inserted from the top side of the superposed surface of the first workpiece to be welded 8 and the third workpiece to be welded 10, and the left and right sides of the stirring needle 6 are in mutual frictional contact with the circular arc-shaped convex surface of the right end of the first workpiece to be welded 8 and the circular arc-shaped concave surface of the left end of the third workpiece to be welded 10 respectively, the shaft shoulder of the stirring head 5, the right end of the top surface of the first workpiece to be welded 8 and the left end of the top surface of the third workpiece to be welded 10 generate heat through friction, the stirring pin 6 extends into the right end surface of the first workpiece to be welded 8 and the left end surface of the third workpiece to be welded 10 to perform friction and stirring, so that the temperature of the material between the right end surface of the first workpiece to be welded 8 and the left end surface of the third workpiece to be welded 10 is increased and softened, the first output shaft 405 of the first motor 404 drives the bearing seat 406 to rotate, further, the stirring head 5 and the stirring pin 6 are driven to move together from the superposed surface of the first workpiece to be welded 8 and the superposed surface of the third workpiece to be welded 10 to the superposed surface of the first workpiece to be welded 8 and the superposed surface of the second workpiece to be welded 9, the material in front of the stirring head 5 and the stirring pin 6 is subjected to strong plastic deformation, and the material with high plastic, the first fastening mechanism 203 fastens the first workpiece to be welded 8 and the second workpiece to be welded 9 under the pushing action of the first cylinder 201, the second fastening mechanism 303 fastens the first workpiece to be welded 8 and the third workpiece to be welded 10 under the pushing action of the second cylinder 301, the circular arc concave surface on the right side of the second workpiece to be welded 9 and the circular arc convex surface on the left side of the first workpiece to be welded 8 form a circular friction stir welding seam, and the circular arc concave surface on the left side of the third workpiece to be welded 10 and the circular arc convex surface on the right side of the first workpiece to be welded 8 form a circular friction stir welding seam, so that the circular seam welding work is completed.
In summary, in the friction stir device, the center of the top end surface of the bearing base 406 is fixedly connected with the shaft end surface of the first output shaft 405 of the first motor 404 fixedly connected with the center of the non-output end surface and the bottom surface of the first bearing plate 403, the center of the top surface of the first bearing plate 403 is fixedly connected with the free end surface of the third piston rod 402 of the third cylinder 401 fixedly installed at the center of the bottom surface of the third frame 4, the center of one side surface of the bearing base 406 is fixedly connected with the end cap of the fourth cylinder 407, the free end surface of the fourth piston rod 408 of the fourth cylinder 407 is fixedly connected with the center of the free end surface of the horizontal arm of the extension arm 409 composed of the horizontal arm and the vertical arm which are integrally formed and connected, the center of the free end surface of the vertical arm of the extension arm 409 is fixedly connected with the center of the top surface of the second bearing plate 410 fixedly connected with the center of the bottom surface and, the shaft end face of the second output shaft 412 of the second motor 411 is fixedly installed at the center of the top end face of the stirring head 5 which is arranged in a circular truncated cone shape, the stirring needle 6 of the stirring head 5 is inserted from the top side of the superposed face of the first workpiece to be welded 8 and the third workpiece to be welded 10, the second output shaft 412 of the second motor 411 drives the stirring head 5 and the stirring needle 6 to rotate at a high speed, the shaft shoulder of the stirring head 5 and the right end of the top side face of the first workpiece to be welded 8 and the left end of the top side face of the third workpiece to be welded 10 generate heat through friction, the stirring needle 6 extends into the right end face of the first workpiece to be welded 8 and the left end face of the third workpiece to be welded 10 to perform friction and stirring, so that the temperature of a material between the right end face of the first workpiece to be welded 8 and the left end face of the third workpiece to be welded 10 is raised and softened, the first output shaft 405 of the first motor 404 drives the bearing seat 406 to rotate, and further drives the stirring head 5 and the stirring needle 6 to The high-speed stirring friction of the superposed surfaces of a workpiece 8 to be welded and a second workpiece 9 to be welded causes the materials in front of the stirring head 5 and the stirring needle 6 to generate strong plastic deformation, the materials with high plastic deformation are gradually deposited in the front of the stirring head 5 and the stirring needle 6, the first fastening mechanism 203 fastens the first workpiece 8 to be welded and the second workpiece 9 to be welded under the pushing action of the first cylinder 201, the circular arc concave surface on the right side of the second workpiece 9 to be welded and the circular arc convex surface on the left side of the first workpiece 8 to be welded form a circular stirring friction welding seam, the second fastening mechanism 303 fastens the first workpiece 8 to be welded and the third workpiece 10 to be welded under the pushing action of the second cylinder 301, and the circular arc concave surface on the left side of the third workpiece 10 to be welded and the circular arc convex surface on the right side of the first workpiece 8 to be welded form a circular stirring friction welding seam, thereby realizing the technical, the technical problem that the existing friction stir welding device cannot weld the circular seam is solved.
This friction stir device, through set up the anti-skidding cover 103 that the cross-section sets up for the ring shape and inside wall and lateral wall all have the skid resistant course between the axial direction of the outer wall of fulcrum 102 and bottom, the inside wall of anti-skidding cover 103 and the outer wall friction connection between fulcrum 102 axial direction and the bottom, the torus of anti-skidding cover 103 bottom and the outside edge friction connection of support 101 top side surface center, anti-skidding cover 103 can prevent effectively that first work piece 8 that waits to weld from taking place radial displacement at support 101, the technological effect of the work piece is waited to weld to effective fixed ring shape has been realized.
This friction stir device, through install the first fastening pad 204 that the cross-section is the setting of U type shape on the medial surface of first fastening device 203, the lateral surface of first fastening pad 204 and the medial surface fixed connection of first fastening device 203, install the second fastening pad 304 that the cross-section is the setting of U type shape on the medial surface of second fastening device 303, the lateral surface of second fastening pad 304 and the medial surface fixed connection of second fastening device 303, first fastening pad 204 and second fastening pad 304 can improve effectively and treat the frictional resistance between welding workpiece and the fastening device, the technological effect of fastening performance that has realized effectively improving fastening device.
The friction stir device comprises a rust removing plate 501 which is uniformly distributed on the shaft shoulder of a stirring head 5 and provided with a sector surface with a sector shape in a cross section and the top side of the rust removing plate 501 fixedly connected with the shaft shoulder of the stirring head 5, a rust removing knife 502 which is provided with a triangle shape in a cross section and the bottom end knife edge of which is parallel to the horizontal plane is arranged at the radial center of the sector surface at the bottom side of the rust removing plate 501 rotating anticlockwise, rust removing conical teeth 503 which are provided with a cone shape and are linearly arranged on the radius of the shaft shoulder of the stirring head 5 are uniformly distributed at the right side of the radial center of the sector surface at the bottom side of the rust removing plate 501, rust removing brushes 504 which are made of plastic materials and are linearly arranged on the radius of the shaft shoulder of the stirring head 5 are uniformly rotated and rubbed with the top end surface of a workpiece to be welded, the conical teeth of the rust removing conical teeth 503 on the rust removing plate 501 firstly remove rust on the top end surface of the, the rust removing knife 502 then scrapes the rust on the top surface of the workpiece to be welded, and the rust removing brush 504 brushes away the residual rust on the top surface of the workpiece to be welded, thereby achieving the technical effect of efficiently removing the rust on the surface of the workpiece to be welded.
According to the friction stir device, the sliding ring body 704 with the section in the shape of a circular ring is arranged on the inner side of the outer edge of the bottom side circular ring of the pressing ring body 703 of the pressing mechanism 7, the sliding ring body 704 is provided with the sliding guide layer on the circular ring on the bottom side, the circular ring on the top side of the sliding ring body 704 is fixedly connected with the inner side of the outer edge of the bottom side circular ring of the pressing ring body 703, the sliding ring body 704 can effectively reduce the friction resistance between the pressing mechanism 7 and a first workpiece 8 to be welded while pressing the first workpiece 8 to be welded, the problem that the first workpiece 8 to be welded rotates along with the pressing mechanism 7 is effectively avoided, and the technical effects of effectively pressing the workpiece to be welded and effectively.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a friction stir welding device of circumferential weld welding, includes welding base (1), its characterized in that: the welding device is characterized in that a first rack (2) and a second rack (3) which are arranged in a rectangular shape in cross section and are symmetrical to each other are respectively installed at the left end center and the right end center of the top surface of the welding base (1), the rectangular surface at the bottom end of the first rack (2) and the rectangular surface at the bottom end of the second rack (3) are respectively and fixedly connected with the left end center and the right end center of the top surface of the welding base (1), a third rack (4) which is arranged in a rectangular shape and is positioned right above the welding base (1) is installed at the top ends of the first rack (2) and the second rack (3), and the left end and the right end of the bottom surface of the third rack (4) are respectively and fixedly connected with the rectangular surface at the top end of the first rack (2) and the rectangular surface at the top end;
a first air cylinder (201) and a second air cylinder (301) which are symmetrical to each other are respectively arranged right above the center of the bottom end of the right side surface of the first frame (2) and right above the center of the bottom end of the left side surface of the second frame (3), a first fastening mechanism (203) and a second fastening mechanism (303) which are arranged in a U-shaped shape in cross section and are symmetrical to each other are respectively arranged on a first piston rod (202) of the first air cylinder (201) and a second piston rod (302) of the second air cylinder (301), the first fastening mechanism (203) and the second fastening mechanism (303) are respectively composed of a top sector plate, a connecting plate and a bottom sector plate, wherein the top sector plate, the connecting plate and the bottom sector plate are integrally formed and are sequentially connected with each other, the center of the outer side surface of a connecting plate of the first fastening mechanism (203) and the center of the outer side surface of a connecting plate of the second fastening mechanism (303) are fixedly connected with the free end surface of a first piston rod (202) of the first air cylinder (201) and the free end surface of a second piston rod (302) of the second air cylinder (301) respectively;
the inner side surfaces of a bottom sector plate and a connecting plate of the first fastening mechanism (203) are in friction connection with the edge center and the center of a left circular arc convex surface of the bottom side surface of a second workpiece (9) to be welded, which is arranged in a semicircular shape, and the inner side surfaces of the bottom sector plate and the connecting plate of the second fastening mechanism (303) are in friction connection with the edge center and the center of a right circular arc convex surface of the bottom side surface of a third workpiece (10) to be welded, which is arranged in a semicircular shape;
the circular arc concave surface on the right side of the second workpiece to be welded (9) and the circular arc concave surface on the left side of the third workpiece to be welded (10) are respectively in friction connection with the circular arc convex surface on the left side and the circular arc convex surface on the right side of the first workpiece to be welded (8) which are arranged in a circular ring shape and are positioned on the outer side of the center of the top surface of the support (101), the circular surface on the bottom side of the first workpiece to be welded (8) is fixedly connected with the center of the top surface of the support (102) and the outer side of the center of the top surface of the support (101) which is fixedly connected with the center of the top surface of the welding base (1), the inner side wall of the first workpiece to be welded (8) is in friction connection with the outer side wall between the axial center and the bottom end of the support (102), and a pressing mechanism (7) consisting of a pressing rod (701), a pressing seat (702) and a, the circular ring surface at the bottom side of the pressing ring body (703) arranged in a circular ring body shape is in mutual rotating friction connection with the inner side edge of the circular ring surface at the top side of the first workpiece to be welded (8), the inner side edge of the circular ring surface at the top side of the pressing ring body (703) is fixedly connected with the circular ring surface at the bottom end of a pressing seat (702) with an opening at the bottom end and a cavity at the inner part, the center of the top surface of the pressing seat (702) is fixedly connected with the bottom end surface of a pressing rod (701) arranged in a cylindrical shape, and the top end surface of the pressing rod (701) is fixedly connected with the bottom end surface of a bearing seat (406);
the center of the top end surface of the bearing seat (406) is fixedly connected with the end surface of a first output shaft (405) of a first motor (404) fixedly connected with the non-output end surface and the center of the bottom side surface of the first bearing plate (403), and the center of the top side surface of the first bearing plate (403) is fixedly connected with the free end surface of a third piston rod (402) of a third cylinder (401) fixedly arranged at the center of the bottom side surface of the third rack (4);
the center of one side face of the bearing seat (406) is fixedly connected with the end cover of a fourth cylinder (407), the free end face of a fourth piston rod (408) of the fourth cylinder (407) is fixedly connected with the center of the free end face of a horizontal arm of an extension arm (409) consisting of a horizontal arm and a vertical arm which are integrally formed and connected with each other, the free end face of the vertical arm of the extension arm (409) is fixedly connected with the center of the bottom side surface and the center of the top side surface of a second bearing plate (410) fixedly connected with the non-output end face of a second motor (411), the shaft end face of a second output shaft (412) of the second motor (411) is fixedly installed at the center of the top end face of the stirring head (5) which is arranged in a circular table shape, the horizontal plane height of the shaft shoulder of the stirring head (5) with the diameter of the section at the top end larger than the diameter of the section at the bottom end of the stirring head is equal to the horizontal plane height of the bottom end of the pressing mechanism (7), the The through-hole of (2), install stirring pin (6) of constituteing by integrated into one piece and interconnect's cylinder and cone in this through-hole, the bottom face of the awl of the cone of stirring pin (6) and the bottom face fixed connection of the cylinder that takes the screw thread on its lateral wall, the lateral wall of the cylinder of stirring pin (6) passes through screw thread interconnect with the inside wall of the shaft shoulder central through-hole of stirring head (5) bottom.
2. The friction stir welding apparatus of a girth weld according to claim 1, wherein: the anti-skidding support shaft is characterized in that an anti-skidding sleeve (103) with a circular ring-shaped section is sleeved between the axial center of the outer side wall of the support shaft (102) and the bottom end, the inner side wall and the outer side wall of the anti-skidding sleeve (103) are in friction connection with the outer side wall between the axial center of the support shaft (102) and the bottom end, and the circular ring surface at the bottom end of the anti-skidding sleeve (103) is in friction connection with the outer side edge at the center of the top side surface of the.
3. The friction stir welding apparatus of a girth weld according to claim 1, wherein: a first fastening pad (204) with a U-shaped section is mounted on the inner side surface of the first fastening mechanism (203), the first fastening pad (204) is composed of a first fan-shaped plate, a connecting plate and a second fan-shaped plate, the first fan-shaped plate, the connecting plate and the second fan-shaped plate are integrally formed and sequentially connected with one another, the section of the connecting plate is in a fan-shaped shape, and the outer side surface of the first fastening pad (204) is fixedly connected with the inner side surface of the first fastening mechanism (203);
the second fastening pad (304) with the U-shaped cross section is mounted on the inner side face of the second fastening mechanism (303), the second fastening pad (304) is composed of a first fan-shaped plate, a connecting plate and a second fan-shaped plate, the first fan-shaped plate, the connecting plate and the second fan-shaped plate are integrally formed and sequentially connected with one another, the cross section of the first fan-shaped plate is fan-shaped, and the outer side face of the second fastening pad (304) is fixedly connected with the inner side face of the second fastening mechanism (303).
4. The friction stir welding apparatus of a girth weld according to claim 1, wherein: the shaft shoulder of the stirring head (5) is uniformly provided with a rust removing plate (501) which is provided with a fan-shaped section, the top sector of the rust removing plate is fixedly connected with the shaft shoulder of the stirring head (5), the radial center of the bottom sector of the rust removing plate (501) rotating anticlockwise is provided with a rust removing knife (502) which is provided with a triangular section, the bottom knife edge of the rust removing knife is parallel to the horizontal plane, and the top rectangular surface of the rust removing knife (502) is fixedly connected with the radial center of the bottom sector of the rust removing plate (501).
5. The friction stir welding apparatus of a girth weld according to claim 4, wherein: the right side of the radial center of the sector surface at the bottom side of the derusting plate (501) is uniformly provided with derusting bevel teeth (503) which are arranged in a cone shape and are linearly arranged on the radius of the shaft shoulder of the stirring head (5), and the bottom surfaces of the derusting bevel teeth (503) are fixedly connected with the right side of the radial center of the sector surface at the bottom side of the derusting plate (501).
6. The friction stir welding apparatus of a girth weld according to claim 4, wherein: the rust removing brush (504) which is made of plastic materials and is linearly arranged on the radius of the shaft shoulder of the stirring head (5) is uniformly distributed on the left side of the radial center of the sector surface at the bottom side of the rust removing plate (501), and the top end of the rust removing brush (504) which is arranged in a bundle shape is fixedly connected with the left side of the radial center of the sector surface at the bottom side of the rust removing plate (501).
7. The friction stir welding apparatus of a girth weld according to claim 1, wherein: the inner side of the outer edge of the bottom side circular ring surface of the pressing ring body (703) of the pressing mechanism (7) is provided with a sliding ring body (704) which is arranged in a ring shape in cross section and provided with a sliding guide layer on the circular ring surface of the bottom side, and the circular ring surface of the top side of the sliding ring body (704) is fixedly connected with the inner side of the outer edge of the bottom side circular ring surface of the pressing ring body (703).
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| CN109128489B (en) * | 2018-10-12 | 2020-06-30 | 湖南文理学院 | Friction stir welding device for aerospace barrel structural part |
| US10661379B1 (en) * | 2018-12-21 | 2020-05-26 | Esab Ab | Friction stir welding flash removal component |
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